Thermaltake has recently released the Golden Orb II. Now they have the Blue Orb II. This cooler is a good deal bigger than its golden brother, which results in seriously improved cooling performance. Also the fan seems to have been improved - cools better, but not much louder.

I had issues with my Blue Orb several years ago on an ASUS 939 motherboard (can't remember which board). The Orb wouldn't work without some modding to the fins because of the ram. Wasn't tall ram either....